openapi: 3.1.0
info:
  title: Checkout.com Customers Instruments API
  description: 'Checkout.com is a global payment processor offering card acquiring, alternative

    payments, payouts, tokenization, customers, instruments, and notification workflows

    via a single API. This OpenAPI is a best-effort partial spec derived from the public

    API reference at https://api-reference.checkout.com/.'
  version: '2026-05-23'
  contact:
    name: Checkout.com Developer Support
    url: https://api-reference.checkout.com/
  license:
    name: Proprietary
servers:
- url: https://api.checkout.com
  description: Production
- url: https://api.sandbox.checkout.com
  description: Sandbox
security:
- BearerAuth: []
tags:
- name: Instruments
paths:
  /instruments:
    post:
      tags:
      - Instruments
      summary: Create an instrument
      operationId: createInstrument
      responses:
        '201':
          description: Instrument created
  /instruments/{id}:
    parameters:
    - name: id
      in: path
      required: true
      schema:
        type: string
    get:
      tags:
      - Instruments
      summary: Get instrument details
      operationId: getInstrument
      responses:
        '200':
          description: Instrument details
    patch:
      tags:
      - Instruments
      summary: Update an instrument
      operationId: updateInstrument
      responses:
        '200':
          description: Instrument updated
    delete:
      tags:
      - Instruments
      summary: Delete an instrument
      operationId: deleteInstrument
      responses:
        '204':
          description: Instrument deleted
components:
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: Secret API key as Bearer token (format `Bearer sk_...`).
    OAuth2:
      type: oauth2
      description: OAuth 2.0 client credentials flow
      flows:
        clientCredentials:
          tokenUrl: https://access.checkout.com/connect/token
          scopes:
            gateway: Access to gateway resources
            vault: Access to vault resources